Publications by authors named "Carmen Leon Astudillo"

Article Synopsis
  • - Duchenne muscular dystrophy (DMD) is a serious genetic condition linked to the absence of a protein called dystrophin, leading to severe mobility and respiratory problems, and is evaluated in the phase 3 EMBARK trial using a gene therapy called delandistrogene moxeparvovec.
  • - The trial involved boys aged 4 to 8 with DMD who received either the gene therapy or a placebo, but results showed no significant improvement in the primary measure of motor function (NSAA score) after 52 weeks.
  • - Although the primary endpoint wasn't met, some secondary measures did show improvement in muscle function and expression of micro-dystrophin, with a notable number of adverse events recorded but
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The American Thoracic Society Core Curriculum updates clinicians annually in pediatric pulmonary disease. This is a summary of the Pediatric Pulmonary Medicine Core Curriculum presented at the 2023 American Thoracic Society International Conference. The respiratory disorders of infancy discussed in this year's review include: the care of the patient with bronchopulmonary dysplasia in the neonatal intensive care unit, clinical phenotypes and comorbidities; diffuse lung disease; pulmonary hypertension; central and obstructive sleep apnea.

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Health professions education is one of the pillars of academic medicine; however, clinical educators often lack the appropriate resources to succeed in this field. Examples of these challenges include: lack of support for faculty development, mentorship, and high cost of resources, when available. In addition, challenges such as the Coronavirus disease (COVID-19) pandemic can affect healthcare personnel who are already struggling to provide adequate patient care while attempting to succeed in the role of educator and supervisor of trainees.

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Background: Dysphagia is a common feature of the natural history of patients with spinal muscular atrophy (SMA). Literature regarding swallowing safety and efficiency is scarce in patients with SMA, particularly in the era of newborn screening programs and disease-modifying therapies.

Objective: To describe the longitudinal changes of swallowing safety and efficiency in children with SMA who received one or more disease modifying therapies METHODS: Case series of patients with SMA followed at the University of Florida from 1 May 2019 to 31 December 2022 who had two or more videofluoroscopy swallowing studies (VFSS), with the first being within 30 days of their first treatment.

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BACKGROUNDSystemic administration of adeno-associated virus (AAV) can trigger life-threatening inflammatory responses, including thrombotic microangiopathy (TMA), acute kidney injury due to atypical hemolytic uremic syndrome-like complement activation, immune-mediated myocardial inflammation, and hepatic toxicity.METHODSWe describe the kinetics of immune activation following systemic AAV serotype 9 (AAV9) administration in 38 individuals following 2 distinct prophylactic immunomodulation regimens. Group 1 received corticosteroids and Group 2 received rituximab plus sirolimus in addition to steroids to prevent anti-AAV antibody formation.

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Article Synopsis
  • The FDA looks at different types of studies to make sure nasal sprays work the same way for people.
  • This study compared two versions of a nasal spray with different particle sizes to see how quickly they work in the body.
  • The results showed that the smaller particles dissolved faster and were better at getting the medicine into the system than the larger particles.
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  • Pompe disease is a serious inherited disorder that results in muscle weakness and neurological issues due to glycogen buildup, and while enzyme replacement therapy has improved patient outcomes, it has limitations.
  • Gene therapy is emerging as a promising alternative, especially for addressing neurological aspects of the disease, with recent studies focusing on the use of recombinant adeno-associated virus (rAAV) and lentiviral vectors (LV).
  • Current research shows that gene therapy could potentially correct the core issues of Pompe disease, but there are still challenges to tackle, including vector production, immune responses, and the possibility of needing to redose patients.
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Introduction: Pompe disease is an inherited disease characterized by a deficit in acid-α-glucosidase (GAA), an enzyme which degrades lysosomal glycogen. The phrenic-diaphragm motor system is affected preferentially, and respiratory failure often occurs despite GAA enzyme replacement therapy. We hypothesized that the continued use of diaphragm pacing (DP) might improve ventilator-dependent subjects' respiratory outcomes and increase ventilator-free time tolerance.

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The American Thoracic Society Core Curriculum updates clinicians annually in pediatric pulmonary disease. This is a concise review of the Pediatric Pulmonary Medicine Core Curriculum presented at the 2022 American Thoracic Society International Conference. Neuromuscular diseases (NMD) comprise a variety of conditions that commonly affect the respiratory system and cause significant morbidity including dysphagia, chronic respiratory failure, and sleep disordered breathing.

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  • Recent advancements, including newborn screening and three new therapies, have significantly improved the quality of life for SMA patients, allowing them to reach important developmental milestones.
  • The paper emphasizes the need for implementation science to effectively manage the complex care required for SMA patients, highlighting existing challenges and proposing a framework to enhance diagnosis and treatment strategies.
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Background: Sleep disordered breathing (SDB) is common in patients with neuromuscular diseases, including spinal muscular atrophy (SMA). While polysomnography (PSG) findings have been described in natural history studies of patients with SMA, reports regarding PSG in treated children are limited to nusinersen. We aim to describe the sleep characteristics in a cohort of children treated with Onasemnogene-abeparvovec.

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The following is a concise review of the Pediatric Pulmonary Medicine Core reviewing pediatric pulmonary infections, diagnostic assays, and imaging techniques presented at the 2021 American Thoracic Society Core Curriculum. Molecular methods have revolutionized microbiology. We highlight the need to collect appropriate samples for detection of specific pathogens or for panels and understand the limitations of the assays.

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Study Objectives: Supplemental oxygen has been shown to decrease the frequency of obstructive respiratory events during sleep, but may result in alveolar hypoventilation. Limited information exists on the effect of supplemental oxygen on sleep and respiratory events in infants with obstructive sleep apnea (OSA).

Methods: We conducted a retrospective study of infants with OSA who had sleep studies performed from 2007-2012.

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Laryngomalacia is a common cause of chronic noisy breathing that can present as stridor in infants and neonates. Mild cases of laryngomalacia are usually followed clinically and managed conservatively. However, the evaluation and diagnosis could be challenging in some patients.

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Background: International medical graduates (IMGs) constitute approximately 25% of the US pediatric workforce. Their recruitment into US residency training raises concerns regarding their competence, although this has not been formally studied. Cincinnati Children's Hospital has systematically recruited IMGs over the past 16 years.

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Invasive aspergillosis and other invasive fungal infections are associated with significant morbidity and mortality in immunocompromised patients, in large part due to limitations of existing diagnostic methods for these infections. Detection of species-specific volatile sesquiterpene metabolites of fungal origin in the breath of patients with invasive fungal infections allows the diagnosis and monitoring of these infections in vivo, non-invasively and more rapidly than possible with current diagnostic methods. While detection of exogenous microbial volatile metabolites in the breath has opened up a new and exciting dimension of diagnostic research and development in infectious diseases, we discuss the daunting challenges to volatile diagnostic biomarker discovery and clinical development.

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